mahan



(No Model.)

F. M. MAHAN.

OIL BURNER.

No. 404,098. Patented May 28, 1889.

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UNITED STATES PATENT OFFICE.

FRANK. M. MAHANpOF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO CHARLES H. MORSE, OF SAME PLACE.

OIL-BURN ER.

SPECIFICATION forming part of Letters Patent No. 404,098, dated May 28, 1889.

Application filed March 26, 1888. Serial No. 268,591- (No model.)

To all whom it may concern.-

Be it known that I, FRANK. M. MAHAN, a citizen of the United States of America, and a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain Improvements in Oil-Burners for Heating Purposes, of which the following is a specification.

The object of my invention is to produce an oil-burner which, in addition to being durable, efficient, requiring little attention or care, economical, portable, and adapted to use in any stove, grate, or other place provided with a flue for the escape of the products of combustion, will also effect the rapid volatilization of the oil at a point where it is surrounded by an ample supply of air.

My invention consists in combining in an oil burner means whereby, first, a large quantity of oil can be easily fed to the flame; second,-means for furnishing an abundant supply of air below the point at which the oil is burned, causing it to rise around and on all sides of the burning surfaces, and, third, means for volatilizing the oil by the time it reaches the point where it is burned.

In the accompanying drawings, Figure 1 is a front view, partly in section, of a burner embodying my improvements and fitted in an ordinary heating-stove, and Fig. 2 is a crosssection in the line (1:00 of the burner shown in V Fig. 1.

The burner A ismade up of a short upright cylinder, B, of iron or other suitable metal, having a tight bottom, a, and perforated with a series of holes, a a, near the top. At or near the bottom of this cylinder a pipe, C, is entered, connected with a suitable reservoir for holding the supply of oil, and provided with a valve or stop-cock, c, for controlling the flow of the same. Into the cylinder B is fitted a plate or partition, D, at a point above the pipe C and below the holes a, a. This plate is provided with a series of perforations, (1 61, into which are fitted upright tubes or pipes E E, opening through the plate D into the chamber F below and extending upward toward the top of the cylinder B.

The shallow chamberF between the plate D and the bottom of the burner may either be left empty or, preferably, packed with some coarse material, as large iron filings, which, while offeringbut little obstruction to the flow of the oil, will furnish a firm support for the packing above. Upon this, and within the pipes E E, is packed asbestus-wool or a similar substance, G, filling the same up to and even with the tops. Over this burner is placed a cap or cover, H, of suitable size and shape to confine and concentrate the combustion within the combustion-chamber 0, provided with orifices h 7t for the escape of the gases produced.

The burner is here shown as fitted within a stove (shown in section I I) by means of an air-tight partition, J near the top of the burner and above the openings at a.

In operation this burner effects a most perfect combustion of oil of medium or high specific gravity and consequently yields a greater amount of heat in proportion to the oil burned. The oil passes into the burner as rapidly as desired through the pipe C, distributes itself readily and evenly through the coarse filings within the chamber F, and rises rapidly through the asbestus-wool G in the tubes E E to the tops of the same. Here it is ignited, and, being surrounded by the air abundantly supplied by the openings a a, the combustion is concentrated about the tops of the pipes E E, thus heating them and the chamber F to a degree which insures complete volatilization of the oil at the instant or even slightly before it reaches the surface of the asbestus packing G. The fierce flame which shoots upward from these tubes, owing to the draft of air through the openings a a, strikes the cover H, raising the same to a white heat, and the inflammable gas from the oil is thus confined, in contact with the air, within the combustionchamber 0 at an intense heat until thorough combustion is attained. The gaseous products are then discharged through the orifices 7L h against the walls of the stove, utilizing a portion of the waste heat contained in these gases in heating the same.

It will be noticed that any accidental overflow of oil from the pipes E E, which might occur in lighting the burner, will merely run down the sides of the pipes to the partition are large and numerous enough to feed a suf ficient quantity of oil to the flame and at the same time not too large for the surrounding air to reach all portions of the upper surface of the asbestus packing.

The draft is greatly increased. by fitting the burner air-tight within the stove at a point between the inlets a a and the orifices h h,

as is done here by means of the plate or partition J.

Having thus described my invention, what I claim as new, and desire to secure-by Letters Patent, is

1, In an oil-burner, the combination of the walls of the burner and a surmounting dome inclosing an interior combustion-chamber and v an underlying oil-chamber immediately beneath said combustion-chamber and subject to the heat thereof, a series of pipes communicating with said oil-chamber and extending up into the combustion-chamber, said pipes being filled with suitable material to carry the oil up to the tops thereof, and a series of openings in the walls of the burner below the level of the tops of said tubes, as and for the purposes set forth.

2. In an oil-burner, the combination of the walls of the burner and a surmounting dome inclosing an interior combustion-chamber and an oil-chamber contiguous thereto, a series of pipes provided with wicking leading from said oil-chamber into said combustion-chamber, a series of air-inlets into said combustion-chamber below the level of the tops of said pipes, and a surmounting dome, as and for the purposes stated.

FRANK. M. MAHAN. Witnesses:

HARRY BITNER, JosEPH H. NELSON. 

